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Question

Difficulty: EasyHealth, Nutrition, and Disease

Chickenpox, measles, and the common cold are infectious human diseases caused by which type of pathogen?

  1. A
    Bacteria
  2. VirusesAnswer
  3. C
    Fungi
  4. D
    Protozoa

Answer

Viruses
Viruses are microscopic non-cellular infectious agents that invade living host cells to reproduce, causing illnesses such as chickenpox, measles, and the common cold.

Step-by-Step Solution

1
Analyze the diseases listed in the stem (chickenpox, measles, and the common cold).
Identify that all three conditions are classic examples of viral infections.
Categorizing the specific illnesses by their biological causative agent is necessary to find the correct pathogen class.
2
Distinguish viruses from bacteria, fungi, and protozoan parasites.
Confirm that viruses are the non-cellular infectious particles responsible for these diseases.
Different pathogens require distinct biological treatments and have different cellular structures.

Key Concept

Classification of Pathogens and Viral Diseases
Estimated Time:35s
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Topics

Health, Nutrition, and Disease

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